depth vs shallowness

depth and shallowness both are nouns.

Word	Noun	Adjective	Verb	Adverb
depth	Yes	No	No	No
shallowness	Yes	No	No	No

As nouns, shallowness is a hyponym of depth; that is, shallowness is a word with a more specific, narrower meaning than depth:

Other hyponyms of depth include deepness, profoundness, profundity, draft, draught, penetration, sounding.

As nouns, shallowness is a hyponym of depth; that is, shallowness is a word with a more specific, narrower meaning than depth:

Other hyponyms of depth include profoundness, profundity, superficiality.

depth (noun)	shallowness (noun)
the extent downward or backward or inward	the quality of lacking physical depth
degree of psychological or intellectual profundity	lack of depth of knowledge or thought or feeling
the attribute or quality of being deep, strong, or intense
the intellectual ability to penetrate deeply into ideas
(usually plural) a low moral state